Log-turner.



A. FOSS & L. COOLIDGB.

LOG TURNER.

APYLIUATION FILED sBPT.1z.19o7.

Patented 0011.27, 1908. y 4

3 BBEETB-SHEET l.

attendu,

A. FOSS 6L L. COOLIDGE.

G TURNER.

APPLC N FILED BEPT.12,1907. 902, 142. Patented Oct. 27, 8. 3 ETS-B 2.

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i V QQ/W A. FOSS L L. COOLIDGB. LOG TURNER.

nPrLIoA'rIoH Hmm snm. 12, 1901.

' Pall'd OC. 27, 1908. a sums-sum" a.

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AAGE FOSS AND LOltEN COOLIDGE, OF MONTESANO, WASHINGTON.

LOG-TURNER.

Specication of Letters Patent.

Patented Oct. 27, 1908.

` Application led September 12, 1907. Serial No. 892,581.

To all whom it may concern:

Be it known that win Aacn Foss and Lonnie Cooianon. citizens of the United States, residingl at Montesano, in the county of Chehalis and State of llasliington, have invented a new and useful Log-Turner, of which the followingl is a specification.

The invention relates to improvements in log turnen-s.

The object of the present invention is to improve the construction ot' log turners, and to provide a logiturncr of .simple and comparatively inexpensive construction capable ot' enabling a logl to be handled with greater facility than heretofore both in moving it from the log dook to the carriage and in turn ing it thereon.

A further object of the invention is to piovide a log turner of this character, which will be easy on the timber and not knock out largo rhunlv's from the logs when turning the satnr.

Also it is the object of the invention to provide a logT turner, adapted to turn a log either against or from the linee of a head block, and capable of engaging the log either at the top or bottom to arrange either the top or hott om face of the log at the front.

Vt'ith these :uid other objects in view, the invention consists in thtI construction and novel combination of parts hereinafter fully described, illustrated in the accompanying drawings, and pointed out in thc claims hereto appended: it boing `understood that various changes in thtl tornn proportion. size and minor details of construction. within thtl scopo of tht` claims, may be resorted to without departing from the spirit or sacrificing any of the advantages of thc invention.

ln the dra wings z-s-Figure 1 is an'elovation of a log turner` constructed in accordance with this invention. Fig. 2 is a longitudinal sectional view ot the oscillatory support or lever, illustrating the arrangement of the endless chain and the dogs thereof. Fig. 3

is a transverse sectional view, taken sub-` stantially on the line :1f-m of Fig. 2. Fig. 4 ,is a similar View, taken substantially on the lino jI/--g of Fig. 2. Fig. 5 is a plan View', illustrating thc arranrenieut of the gearing for operating the cnt less chain. Fig. 6 is a detail perspective view of one of the dogs.

Like numerals of reference designate corresponding parts in all the figures of the drawings. t

1 designates an oscillatory lever or member of suitable metal and consistiner of a bar or beam, extending upwardly rom a point beneath the log deck 2 of a saw mill, and pivotally mounted at its lower end by means of a horizontal 'shaft 3, a suitable bearing 4 being provided at the lower end of the lever or support 1 for the shaft 3. The log deck is provided with a suitable openin for the passage of the upper portion of the Ievcr or su port, Awhich is adapted to swing toward an from a saw mill carriage 5 from the position shown in full lines in Fig. 1 of the drawings to that shown in dotted lines in the said figure.

The oscillatoryanovemcnt of the lever or support is effected by means of a pivotally mounted cylinder 6, having a piston 7, which extends upwardly from the cylinder. The cylinder is provided at its center with suitable trunnions 8, and it is pivotally mounted in suitable bearings 9 to enable it to conform to the oscillatory movements of the support or lever 1. The support or lever 1 is provided at an intermediate point with a rearwardly projecting arm 10, arran ed approximately at right angles to the ody of the lever and connected at its outer end with the outer end of the piston by al suitable pivot 11. The cylinder, which is designedv to be operated by steam or other suitable power, 1s equipped with pipes 12 adapted to serve as exhaust and feed pipes. In practice the cylinder will be equipped with suitable means for admitting pressure at one side of the piston and for exhausting at thc opposite side, but as the particular construction of suoli mechanism does not constii tute any portion of the present invention, detail illustration and description thereof are deemed unnecessary. The cylinder through its piston is adapted to swing the lever or sup ort upwardly from the dotted position of tig. 1 to move a log towards the saw mill carriage, and lit is adapted to hold a loe' tightly against the knees of the carriage, t

while the former is being properly secured by suitable dogging mechanism 13.

The support or lever is equipped with an endless chain 14, provided at intervals with dogs 15 operating in a front longitudinal groove 16 ofthe body portion of the lever l or support, the inner end of the arm being provided with a slot or opening 18 for the passage of the chain and t e dogs. The chain. which may be f any preferred construction.

is preferably ade up of links arranged al-` ternately at the sides and at the center of ism, having an operating lever 37.

The

the chain7 and the dogs, which are tapered l shifting lever is adafpted to be operated to longitudinally of the chain, are provided with integral Shanks 19, having end perforations 20 and pivoted to the adjacent side links of the chain. The dogs are provided with straight rear edges or facesQl. 'arf ranged at an acute angle to the outer front faces of the dogs and forming heel portions, which are adapted to` engage a log at the bottom thereof. The points formed by the taper of the dogs are adapted to engage the log at the top thereof. The endless chain, whicn is mounted on upper and lower sprocket wheels 22 and 23, may run in either direction to engage a log either at the top or bottom and to turn a logl either against or from thc knees, or to )nove a log toward or from the saw mill carriage. The front groove 16 of the body portion of the lever is T-shaped in cross section, and it forms opposite inwardly extending or over-hang ing side portions or flanges to engage the side links, as clearly illustrated in Fig. 4 of the dawings. The dogs are provided with straight inner faces, located at opposite sides of the shanks 19 and arranged to slide on the. support' at opposite sides of the longitudinal groove 16, and the lsaid dogs, when at the front ot' the support` are iuterlocked with the saine by means of the endless chain. The side flanges, which eXtend longitudinally of the groove 16, prevent the chain from pulling out of the groove, and they keep the dogs from tilting either upwardly or downwardly. This construction also pro- 'rides a log turner of great strength and cnablcs the log turner to be constructed of any size to suit the character of work to be performed, and the necessary power may be applicdto the log turner without liability of injuring the dogs or the endless chain.

The upper and lower sprocket wheels 22 and 23 are triangular, and the upper one is mounted on an upper shaft 24. journaled in suitable bearings of adjustable blocks 25. which are adapted to be moved upwardly to stretch the endless chain to the desired tonsion. The bearing blocks 25, which are provided with opposite ribs 26, are arranged in vertical recesses 27 of the upper end of the lever or support, and the ribs 2G engage corresponding grooves 28 in the opposite walls of the recesses 27. The lower ends of the slidablc bearing blocks Q5 are engaged by adjusting screws 2f), n'iountcd on the lc- \'er or support; at the bottom of the recess-es 27 and .secured in their adjustment by suitable lock nuts 30.

'l'hc lower sprocket wheel is mounted on the. horizontal shaft 2G. which is connected by spur gears 3l and 252 with a countershaft 323, and the latter carrics'a, friction wheel llt. located between opposite friction pnnons 85 and 36. of the shifting mechant carry either of the iction pinions 35 and 36 into engagement with the friction wheel 34 for moving the endless chain in either direction. The friction pinions 35 and 3G are mounted on a shaft 38, which is connected by a belt 3S) and a pulley 40 with any suitable source of power, Instead of employing` shifting mechanism having friction wheels, spur gears, or other form of shifting mechanism may beprovided for operating the endless chain. As the lever or support is pivotally mounted on the horizontal shaft, which carries the lower sprocket wheel 09 the oscillation of the support or lever does not affect the operation of the gearing. The ends of the body portion of the support or lever are slotted or hifurcated to receive the sprocket Wheels, the side rccesses 2T being located `atopposite sides of the upper slot or bifurcation.

When the front flight of sprocket chains is moved upwardly, one of the dogs will be carried Vinto engagement with the lower face of the log, and the latter will be rotated in a direction to present its bottom face to the saw. Then it is desired to present the top of the log to the saw, the chain is moved-iu the opposite direction to .engage one of the dogs with the upper face of the log.` and the support is then swung baekwardly to tilt the log to bring its top face to the front.

Having thus fully described our inven-V.

tion, what we claim as new and desire to secure by Letters Patent` is 1. In a log turner, the combination of au oscillatory supporti adapted to fit against one of the faces of a log, a cylinder having a piston connected with the support for actuating the same, an endless chain mounted on the support and provided with log-engaging means spaced apart aA sutlieient. distance to permit the log to fit against a support and adapted to engagea log either at the top or bottom, and gearing connected with the endless chain for opcrating the same.

2. v,In a log turner, the combination of an oscillatory support adapted 'to fit against one of the faces of a log, an endless chain provided with dogs tapered longitudinally of the chain to form front engaging portions and provided with straight rear edges. whereby the dogs are adapted to move a log in either direction. means for oscillating the support, and gearing for operating the chain.

it. tn a log turner` the combination of an oscillatory support having a groovc p1oA vided with -inwardly extending' flanges. an endless chain mounted on the support and operating in the groove aruladapted to engage the inner faces ot' thc said flanges and provided with exterior dogs slidable on the outer faces of the said flanges, Suid dogs being inlerlocked with (he support by the endles` chain, und gearingl for operating.;r the chain.

4. ln :i log turner, the combination of an oscillatory support provided with n front` groove and huvinglr its ends bifurented, the upper unil of the support beingl also provided wiih opposite recesses, bearing hlm-lis urrunged in the recesses sind slidubly inierlooked with the Valls bhereof, un upper shaft uurried b v the bearing blocks,' :1 lower ,shuft foriuingg4 u pivot, for the support, sprorket wheels mounted on the upper land lower shufts, zi chain meshing with the .spl'onlce wheels und operating in the front gruuw :unl provided with' dogs and interluvlqwl with the support by the said chain, ulljusliug derives connected with the heuriuuj lllowlcs Yfor stretching' the elniin, und gem-ing rounvciml Wiih the lower shu't for npvl'uiihg' l||0 'liuiil.

oscillatory support provided at its front with a longitudinal groove, sprocket Wheels mounted :it euch end of the support, a chain arranged on the sprocket Wheels and extending along the support at the front and back of the suine. the front portion of the chain lining loruied within the seid groove, sind (logs having fiat inner faces to Slide on the inner fune of the support et opposite sides of the groove und provided with redueed integral shunks extending into the groove und forming1 links of the chain und interlucked with the support by means of the said chain.

In testimony, that We Claim the foregoing :is our own, We have hereto uiiixefl our sig nuiures in the presenre of two witnesses.

l). W'. Fmcwr, l. ll. Fruwr. 

